cobol1.hlp (Topic list)
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Key (↑ Intrinsic Functions)
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     The arguments for each function are defined by a letter followed by
     a number. The letter defines the type, as follows:
 
           A - Alphabetic
           I - Integer
           N - Numeric
           X - Alphanumeric
 
     The number is the ordinal number of the argument in the set of
     arguments for the function.
 
     For example, ANNUITY has arguments N1, I2. That is it has two
     arguments, the first being numeric, the second being an integer.
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